*We had one source say that if its an old Mission, they were pollinator specific- needed a certain kind of wasp. And as we are somewhat geographically isolated, that sounded reasonable*
Your fig could be a Mission Seedling,but not a Mission,Because a Mission cultivar,does not need a pollinator!
A Mission seedling is a plant that grows from a pollinated Mission Flower,but the pollination was done with Male caprifig pollen,so the resulting plant has genes from both sides,mother and father plant,so the new seedling needs pollination to produce ripe fruits,(if it is a female),or will never produce any edible fruits if it is a male,in itself, and is not a persistent male type.
It is complicated,but simply put,I wanted to point out that your tree is not a Mission cultivar,like it was suggested.